King Kamfa / 9.9 (and other fancy names) are basically marketing monikers created by the breeders -- if you go onto a Thai FB page selling Flowerhorn you'll be amazed by the creative names they're coming up with nowadays lol, e.g. 'Super Tornados' (and the equally amazing fish). But this coupled with the fact there's so much mixing nowadays it's often really hard to tell what's exactly what imo (unless perhaps you bought it directly from a breeder, but even they can be pretty secretive about what's in their Flowerhorn cocktail mixtures).
All of that said I guess it's true that esp. "King Kamfa" has through common/popular usage kind of evolved to refer to a 'higher class' of Kamfa that exceeds the usual standards. TBH I'm personally not sure if your FH meets those higher standards, but I will say he's a very lovely FH with a lot of potential if well taken care of, incl. moving to a larger tank as he grows.
In regards to his kok size, remember Kamfa heads don't get as crazy big as say ZZ Red Dragon heads, and they take longer to grow out as well. But he already has a nicely pronounced hump going on, so he should be good in that dept. too. Best of Luck growing and grooming him!